ci2 starts bisection 2026-02-02 15:43:10.378919325 +0000 UTC m=+25830.238590342
bisecting fixing commit since e253c52bbdfce1f214777784549a350a8f9ba3b8
building syzkaller on d6526ea3e6ad9081c902859bbb80f9f840377cb4
ensuring issue is reproducible on original commit e253c52bbdfce1f214777784549a350a8f9ba3b8

testing commit e253c52bbdfce1f214777784549a350a8f9ba3b8 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: dbfab0a358522fabd1d1a9d0aee38c180d8c35c44eb8390e870ed050506074b7
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #5: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #6: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #7: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #8: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #9: crashed: kernel BUG in ext4_split_extent_at
run #10: crashed: kernel BUG in ext4_mb_normalize_request
run #11: crashed: kernel BUG in ext4_mb_normalize_request
run #12: crashed: kernel BUG in ext4_mb_normalize_request
run #13: crashed: kernel BUG in ext4_split_extent_at
run #14: crashed: kernel BUG in ext4_mb_normalize_request
run #15: crashed: kernel BUG in ext4_mb_normalize_request
run #16: crashed: kernel BUG in ext4_mb_normalize_request
run #17: crashed: kernel BUG in ext4_mb_normalize_request
run #18: crashed: kernel BUG in ext4_split_extent_at
run #19: crashed: kernel BUG in ext4_split_extent_at
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit e253c52bbdfce1f214777784549a350a8f9ba3b8 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 6c3ae2a7ce967b333311bc5e2870753f1dcf90a18117092832ec3c0e24968b53
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: crashed: kernel BUG in ext4_split_extent_at
run #4: crashed: kernel BUG in ext4_mb_normalize_request
run #5: crashed: kernel BUG in ext4_mb_normalize_request
run #6: crashed: kernel BUG in ext4_mb_normalize_request
run #7: crashed: kernel BUG in ext4_split_extent_at
run #8: crashed: kernel BUG in ext4_mb_normalize_request
run #9: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the bug reproduces without the instrumentation
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
kconfig minimization: base=4788 full=6026 leaves diff=248
split chunks (needed=false): <248>
split chunk #0 of len 248 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed
testing commit e253c52bbdfce1f214777784549a350a8f9ba3b8 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 2e1797bd691d8b4128c61f29a6fa49f59bd8ebaa103e7b2acabebbd3eda52144
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #5: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #6: crashed: kernel BUG in ext4_mb_normalize_request
run #7: crashed: kernel BUG in ext4_mb_normalize_request
run #8: crashed: kernel BUG in ext4_mb_normalize_request
run #9: OK
representative crash: kernel BUG in ext4_mb_normalize_request, types: [BUG]
unable to determine the verdict: 1 good runs (wanted 5), for bad wanted 5 in total, got 4
testing without sub-chunk 2/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit e253c52bbdfce1f214777784549a350a8f9ba3b8 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: f578aa89b6978f9d38f877e3f84b5d82e4cb46efc47474f715cd7150dda8d280
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: crashed: kernel BUG in ext4_split_extent_at
run #2: crashed: kernel BUG in ext4_split_extent_at
run #3: crashed: kernel BUG in ext4_mb_normalize_request
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed
testing commit e253c52bbdfce1f214777784549a350a8f9ba3b8 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: ca0c844a8cb53647118c24742b82091cf2671ab397f0b7e9c85d87747c6b01e4
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: crashed: kernel BUG in ext4_mb_normalize_request
run #5: crashed: kernel BUG in ext4_mb_normalize_request
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: kernel BUG in ext4_mb_normalize_request, types: [BUG]
unable to determine the verdict: 14 good runs (wanted 15), for bad wanted 10 in total, got 16
testing without sub-chunk 4/5
disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed
testing commit e253c52bbdfce1f214777784549a350a8f9ba3b8 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 5bebf1cade313be50f6b45032de28244cd218f955ac2bad25da6ca09ba3b3027
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: crashed: kernel BUG in ext4_split_extent_at
run #5: OK
run #6: OK
run #7: crashed: kernel BUG in ext4_mb_normalize_request
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
unable to determine the verdict: 14 good runs (wanted 15), for bad wanted 10 in total, got 16
testing without sub-chunk 5/5
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit e253c52bbdfce1f214777784549a350a8f9ba3b8 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 72a7aedf7d910cffeff70b3810c209e21be33f509fcc5f99bc39c47a9d5d0145
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #5: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #6: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #7: crashed: kernel BUG in ext4_mb_normalize_request
run #8: crashed: kernel BUG in ext4_mb_normalize_request
run #9: crashed: kernel BUG in ext4_mb_normalize_request
run #10: crashed: kernel BUG in ext4_mb_normalize_request
run #11: crashed: kernel BUG in ext4_mb_normalize_request
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: kernel BUG in ext4_mb_normalize_request, types: [BUG]
the chunk can be dropped
minimized to 150 configs; suspects: [ARCH_CONFIGURES_CPU_MITIGATIONS ARCH_HAS_CPU_FINALIZE_INIT ARCH_WANT_FRAME_POINTERS CFG80211 CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS DRAGONRISE_FF DRM DRM_BRIDGE DRM_GEM_SHMEM_HELPER DRM_KMS_HELPER DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_ORIENTATION_QUIRKS DRM_TTM DRM_TTM_DMA_PAGE_POOL DRM_VIRTIO_GPU DUMMY_CONSOLE DVB_CORE FB FB_CMDLINE FB_DEFERRED_IO FB_NOTIFY FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT GPIOLIB_IRQCHIP GREENASIA_FF HDMI HID_A4TECH HID_ACRUX HID_ACRUX_FF HID_APPLEIR HID_AUREAL HID_BELKIN HID_CHERRY HID_CHICONY HID_CP2112 HID_CYPRESS HID_DRAGONRISE HID_ELO HID_EMS_FF HID_EZKEY HID_GREENASIA HID_GT683R HID_GYRATION HID_ICADE HID_ITE HID_KENSINGTON HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_MONTEREY HID_NTI HID_NTRIG HID_ORTEK HID_PENMOUNT HID_SMARTJOYPLUS HID_THRUSTMASTER INPUT_TABLET INPUT_TOUCHSCREEN MEDIA_DIGITAL_TV_SUPPORT REGMAP_SPI RESET_CONTROLLER RFKILL RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 SMARTJOYPLUS_FF SMSC_PHY SND SND_COMPRESS_OFFLOAD SND_DMAENGINE_PCM SND_DMA_SGBUF SND_DYNAMIC_MINORS SND_HRTIMER SND_HWDEP SND_PCI SND_PCM SND_PCM_TIMER SND_PROC_FS SND_RAWMIDI SND_SOC SND_SOC_ACPI SND_SOC_ACPI_INTEL_MATCH SND_SOC_COMPRESS SND_SOC_GENERIC_DMAENGINE_PCM SND_SOC_I2C_AND_SPI SND_SOC_INTEL_MACH SND_SOC_INTEL_SST_TOPLEVEL SND_SOC_TOPOLOGY SND_SPI SND_SST_ATOM_HIFI2_PLATFORM SND_SST_ATOM_HIFI2_PLATFORM_ACPI SND_TIMER SND_USB SND_USB_AUDIO SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_VERBOSE_PROCFS SND_X86 SOUND SURFACE_PLATFORMS TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_GTCO TABLET_USB_HANWANG TABLET_USB_KBTAB THRUSTMASTER_FF TOOLS_SUPPORT_RELR TOUCHSCREEN_PROPERTIES TYPEC_DP_ALTMODE TYPEC_FUSB302 USB_ARMLINUX USB_BELKIN USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_ACC USB_CONFIGFS_F_AUDIO_SRC USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CONFIGFS_UEVENT USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_F_ACC USB_F_ACM USB_F_AUDIO_SRC USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_NCM USB_F_OBEX USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_IPHETH USB_ISP1760 USB_ISP1760_HCD USB_ISP1760_HOST_ROLE USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_MON USB_NET_CDC_MBIM USB_NET_CDC_SUBSET VT WIRELESS]
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing current HEAD 186f761c519d0518baa78bf57788195e11c7e34c
testing commit 186f761c519d0518baa78bf57788195e11c7e34c gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: fb095db47e3baea478fd198e9e2c2b8909504deee904189dfe277497b2b06197
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #4: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #5: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
unable to determine the verdict: 14 good runs (wanted 15), for bad wanted 10 in total, got 14
HEAD had kernel build, boot or test errors
reproducer is flaky (0.38 repro chance estimate)
revisions tested: 8, total time: 2h29m37.574000237s (build: 49m54.194172454s, test: 1h36m11.090746447s)
crash still not fixed or there were kernel test errors
commit msg: Merge 816b2eac151a ("Revert "iommu/amd: Skip enabling command/event buffers for kdump"") into android13-5.10-lts
crash: failed testing reproducer on 186f761c519d0518baa78bf57788195e11c7e34c